Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
21031 (1989 TO15)
Classification: Main-belt Asteroid          SPK-ID: 2021031
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2321658282512099 4.611e-08  
a 2.310173819030683 1.1096e-08 AU
q 1.773830400931164 1.0333e-07 AU
i 2.579308731323301 6.6528e-06 deg
node 199.4824774182745 0.00011835 deg
peri 221.2819354524868 0.00012009 deg
M 29.76833418421642 1.6529e-05 deg
tp 2456894.448346253341
(2014-Aug-24.94834625)
5.8774e-05 JED
period 1282.523741924398
3.51
9.24e-06
2.53e-08
d
yr
n .2806965580690366 2.0223e-09 deg/d
Q 2.846517237130203 1.3672e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      9277 days (25.40 yr)  
   first obs. used      1989-10-03  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52736  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:03:07  

Additional Information
 Earth MOID = .787091 AU 
 T_jup = 3.547 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO231562  

21031 (1989 TO15)          Discovered 1989-Oct-03 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 TO15 = 1994 CW2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-29 20:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin